Home / 8,422.70-12,636.75-3,492.86

Finding the Fourth Proportional to 8,422.70, 12,636.75 and 3,492.86

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Solution

The fourth proportional to 8,422.70, 12,636.75 and 3,492.86 is: 5,240.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.70 : 12,636.75 = 3,492.86 : x
  2. Step 2: Convert to fraction form
    8,422.70/12,636.75 = 3,492.86/x
  3. Step 3: Cross multiply
    8,422.70x = 12,636.75 × 3,492.86
  4. Step 4: Simplify right side
    8,422.70x = 44,138,398.61
  5. Step 5: Solve for x
    x = 44,138,398.61/8,422.70
  6. Step 6: Final answer
    x = 5,240.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.